Comparison of carrier particles in the gas–liquid-solid inverse fluidised bed bioreactor

Lin Wang, Sicong Liu, George Nakhla, Jesse Zhu, Yuanyuan Shao

Research output: Journal PublicationArticlepeer-review

2 Citations (Scopus)


The performance and energy consumption of a gas–liquid-solid inverse fluidised bed bioreactor (GLS-IFBBR) using polyethylene (PE) particles with different surface coatings (zeolite, lava rock, activated carbon and multi-plastic) as media for synthetic wastewater treatment were investigated at loading rates of 1.64–3.38 kg COD/(m3·d) and 0.17–0.34 kg N/(m3·d) to determine the optimum carrier media. The results showed that PE coated with other inorganic materials could increase the nutrient removal efficiency at the same influent conditions. Compared with other media, PE coated with zeolite (PEZ) was the optimal carrier particles in this study as reflected by the highest COD and nitrogen removal, stable effluent, low biomass yield at different hydraulic retention times (HRT). In addition, the energy consumption of lavarock-coated PE (PEL) with a highest density was the lowest.

Original languageEnglish
Pages (from-to)3507-3518
Number of pages12
JournalEnvironmental Technology (United Kingdom)
Issue number23
Publication statusPublished - 15 Oct 2022
Externally publishedYes


  • Gas-liquid-solid inverse fluidised bed bioreactor
  • energy consumption
  • light media
  • nitrification

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal


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